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Advantages of vacuum sintering furnace

Advantages of vacuum sintering furnace

1. It is easier to control the carbon content: under the condition of vacuum sintering temperature, the pressure in the furnace is only tens of Pascals (Pa) or even lower, O2, N2, H2 and H2O molecules are very few, and many reactions can be ignored. The impact is very small. As long as the dewaxing process is strictly controlled, the carbon content of the alloy changes very little during the vacuum sintering process, and the performance and structure are quite stable.

2. It can improve the purity of the sintered alloy: under vacuum sintering conditions, it is beneficial to the reduction of metal oxides; the whole sintering cycle does not need to open the furnace door, no air enters, and there is almost no reaction of N2 and O2.

3. It can improve the solid phase properties of the alloy: under vacuum sintering conditions, the surface of the hard phase adsorbs less impurities, improves the wettability of the drill to the hard phase, and improves the strength of the alloy, especially the alloy containing TiC.

4. The operation process is simple: since the filler can be omitted during vacuum sintering, this not only simplifies the operation, but also avoids the adverse effect of the filler on the surface of the sintered body.

5. Various temperature sintering can be realized: temperature, atmosphere and furnace pressure can be controlled separately in temperature sections, and isothermal sintering (heat preservation) at any temperature can be realized, and multiple functions can be completed, such as gradient alloy sintering.